How to connect a bathymetric sensor to pixhawk

Hi everybody,

I am trying to hook a bathymetric sensor (AIRMAR SS510) , which transfers NMEA 0183 data in real time to a computer via RS422, to pixhawk (px4). I am aware that pixhawk receives data via RS232 through the telemetry ports. Is all I need a converter from RS422->RS232 and then configure the telemtry ports?

Thank you in advance for your help and time.